Accuracy of refractive index spectroscopy by broadband interferometry

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2022_elsevier_measurement_arosa_accuracy.pdf (6.99 MB)
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URI: http://hdl.handle.net/10347/27295
E-ISSN: 0263-2241
DOI: 10.1016/j.measurement.2021.110225

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2022

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Elsevier
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Uncertainties of refractive and group index in dispersion measurement by spectrally resolved white light interferometry are deeply analyzed. First, the contribution to uncertainty of the different parameters affecting both indices is identified. Afterwards, results are presented for a 1.5 mm thick fused silica sample over a broad spectral range, from 400 to 1000 nm, and the effects that mostly deteriorate the measurement accuracy are established. Finally, the different contributions are quadratically combined to determine the total uncertainty of the two indices

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Dispersion| Spectroscopy| Spectral interferometry| Uncertainty

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Measurement 187 (2022) 110225

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The financial support of the Spanish Ministry of Economy and Competitiveness through the coordinated grants MAT2017-89239-C2-1-P is gratefully acknowledged. Moreover, this work was funded by the Xunta de Galicia and FEDER (ED431D 2017/06, ED431E2018/08, GRC 508 ED431C 2020/10)

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© 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Attribution-NonCommercial-NoDerivatives 4.0 Internacional

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